Invasions Of Earth

British Invasions

Martians in tripods invaded Britain in The War Of The Worlds.

Earth was invaded and occupied by:

the Mekon's forces from Venus in Dan Dare: Reign of the Robots;
Daleks from the extrasolar planet, Skaro, in Doctor Who;
extrasolar aliens in tripods in John Christopher's Tripods Trilogy.

Daleks, highly evolved beings moving around in protective machines, resemble Wellsian Martians and ruled Earth through roboticised men, "robomen," as the Mekon ruled it through "electrobots."

A novel, a comic strip, a TV series and a trilogy.

American Invasions

The Moon Men by Edgar Rice Burroughs
The Puppet Masters by Robert Heinlein
Invasion Of The Body Snatchers by Jack Finney
VOR by James Blish
The War Of Two Worlds by Poul Anderson (Martians and extrasolars)
Sleeping Planet by William R Burkett
Footfall by Larry Niven and Jerry Pournelle

Six novels and also a short story:

Poul Anderson cleverly projected how militarily superior humanoid aliens might conquer Earth economically in "The Soldier from the Stars." But it was another of Anderson's works, "Hunters of the Sky Cave," that prompted this line of thought about planetary invasions and occupations. See here.

Doctor Who And The Real Stuff

When I advise Doctor Who fans to read "the real stuff," the examples I give are The Time Machine by HG Wells, The Time Patrol by Poul Anderson and The Time Traveler's Wife by Audrey Niffeneger. These unrelated titles form a conceptual sequence:

a temporal vehicle;
a time traveling organization;
a time traveler's private life.

-and correspond to features of Doctor Who:

the Tardis;
the Time Lords;
The Doctor's Wife, an episode scripted by Neil Gaiman.

The Dancer From Atlantis by Poul Anderson is also relevant. It features:

a man in a malfunctioning space-time vehicle;
companions accidentally gathered from earlier periods;
a language teaching device;
a visit to Atlantis (this happened to the Third Doctor).

Doctor Who

Doctor Who will celebrate its fiftieth anniversary in November, 2013. Like Superman, Star Trek and Flash Gordon, it is a story that needs to be retold from the beginning, getting it right this time. The Time Lords should be:

not aliens but our future;

not extraterrestrials but extra-temporals;

our evolutionary successors, like Poul Anderson's Danellians.

The originals of the Doctor and his companions against the Daleks are the Time Traveller and Weena against the Morlocks.

On a Doctor Who fan's shelves, I saw:

a boxed set of CD's of the first three Doctor Who stories - the beginning;

a boxed set of DVD's of the two feature films starring Peter Cushing - an alternative beginning;

a "Doctor Who: Lost in Time" CD collection of episodes of early stories that no longer exist in their entirety - truly "lost in time";

the DVD of the television film starring Paul McCann in his single appearance as the Doctor;

CD's of various stories featuring different Doctors;

thus, television and cinema history.

The TV series is called Doctor Who but the first feature film was Doctor Who And The Daleks and the second was Daleks Invasion Earth 2150 AD so the Daleks take over the titles. In the TV series, the second story is "The Daleks." Curiously, the poster for the second film prominently features not a Dalek but a roboman with Daleks and other figures in the background.

I have stopped watching the TV series which cleverly presented the circular causality paradox in the first "Weeping Angels" story but mishandled causality violation when Rose tried to prevent her father's death. I advise Whovians to read The Time Machine, The Time Patrol and The Time Traveler's Wife.